content: /* ===========================================================
   * JFreeChart : a free chart library for the Java(tm) platform
   * ===========================================================
   *
   * (C) Copyright 2000-2012, by Object Refinery Limited and Contributors.
   *
   * Project Info:  http://www.jfree.org/jfreechart/index.html
   *
   * This library is free software; you can redistribute it and/or modify it
   * under the terms of the GNU Lesser General Public License as published by
   * the Free Software Foundation; either version 2.1 of the License, or
   * (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful, but
   * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
   * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
   * License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
   * USA.
   *
   * [Oracle and Java are registered trademarks of Oracle and/or its affiliates. 
   * Other names may be trademarks of their respective owners.]
   *
   * --------------------------------
   * SimpleHistogramDatasetTests.java
   * --------------------------------
   * (C) Copyright 2005-2008, by Object Refinery Limited and Contributors.
   *
   * Original Author:  David Gilbert (for Object Refinery Limited);
   * Contributor(s):   -;
   *
   * Changes
   * -------
   * 10-Jan-2005 : Version 1 (DG);
   * 21-May-2007 : Added testClearObservations (DG);
   *
   */
  
  package org.jfree.data.statistics;
  
  import org.junit.Test;
  
  import java.io.ByteArrayInputStream;
  import java.io.ByteArrayOutputStream;
  import java.io.IOException;
  import java.io.ObjectInput;
  import java.io.ObjectInputStream;
  import java.io.ObjectOutput;
  import java.io.ObjectOutputStream;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertFalse;
  import static org.junit.Assert.assertNotSame;
  import static org.junit.Assert.assertSame;
  
  /**
   * Tests for the {@link SimpleHistogramDataset} class.
   */
  public class SimpleHistogramDatasetTest  {
  
  
  
  
  
      /**
       * Ensure that the equals() method can distinguish all fields.
       */
      @Test
      public void testEquals() {
          SimpleHistogramDataset d1 = new SimpleHistogramDataset("Dataset 1");
          SimpleHistogramDataset d2 = new SimpleHistogramDataset("Dataset 1");
          assertEquals(d1, d2);
  
          d1.addBin(new SimpleHistogramBin(1.0, 2.0));
          assertFalse(d1.equals(d2));
          d2.addBin(new SimpleHistogramBin(1.0, 2.0));
          assertEquals(d1, d2);
      }
  
      /**
       * Some checks for the clone() method.
       */
      @Test
      public void testCloning() throws CloneNotSupportedException {
          SimpleHistogramDataset d1 = new SimpleHistogramDataset("Dataset 1");
          SimpleHistogramDataset d2 = (SimpleHistogramDataset) d1.clone();
          assertNotSame(d1, d2);
          assertSame(d1.getClass(), d2.getClass());
          assertEquals(d1, d2);
  
          // check that clone is independent of the original
          d2.addBin(new SimpleHistogramBin(2.0, 3.0));
          d2.addObservation(2.3);
          assertFalse(d1.equals(d2));
      }
  
      /**
       * Serialize an instance, restore it, and check for equality.
       */
      @Test
      public void testSerialization() throws IOException, ClassNotFoundException {
          SimpleHistogramDataset d1 = new SimpleHistogramDataset("D1");
  
              ByteArrayOutputStream buffer = new ByteArrayOutputStream();
              ObjectOutput out = new ObjectOutputStream(buffer);
              out.writeObject(d1);
              out.close();
              ObjectInput in = new ObjectInputStream(
                      new ByteArrayInputStream(buffer.toByteArray()));
          SimpleHistogramDataset d2 = (SimpleHistogramDataset) in.readObject();
              in.close();
  
          assertEquals(d1, d2);
      }
  
      private static final double EPSILON = 0.0000000001;
  
      /**
       * Some checks for the clearObservations() method.
       */
      @Test
      public void testClearObservations() {
          SimpleHistogramDataset d1 = new SimpleHistogramDataset("D1");
          d1.clearObservations();
          assertEquals(0, d1.getItemCount(0));
          d1.addBin(new SimpleHistogramBin(0.0, 1.0));
          d1.addObservation(0.5);
          assertEquals(1.0, d1.getYValue(0, 0), EPSILON);
      }
  
      /**
       * Some checks for the removeAllBins() method.
       */
      @Test
      public void testRemoveAllBins() {
          SimpleHistogramDataset d1 = new SimpleHistogramDataset("D1");
          d1.addBin(new SimpleHistogramBin(0.0, 1.0));
          d1.addObservation(0.5);
          d1.addBin(new SimpleHistogramBin(2.0, 3.0));
          assertEquals(2, d1.getItemCount(0));
          d1.removeAllBins();
          assertEquals(0, d1.getItemCount(0));
      }
  
  }
  